Pressure means for wringer rolls



NOV. 12, 1940. PERKlNs 2,221,408

PRESSURE MEANS FOR WRINGER ROLLS Filed Jan. 14, 1938 2 Sheets-Sheet lINVENTOR.

ATTORNEY.

Nov. 12, 1940. J. PERKENS I 2,221,408

PRESSURE MEANS FOR WRINGER ROLLS F iled Jan. 14, 1958- 2 Sheets-Sheet 2INVENTOR.

ATTORNEY.

Patented Nov. 12, 1940 VPATENT OFFICE PRESSURE MEANS FORIVRINGER ROLLSJulian L. Perkins, West Springfield, Mass, assignor to PerkinsMachineand Gear Company Application January 14, 1938, Serial No. 185,022

7 Claims. (CL 68-463) This invention relates to improvements in wringersand is directed more particularly to tension or pressure mechanism forthe rolls of wringers. i

5 The principal objects of the invention are directed to the provisionof novel means for tensioning the rolls of a wringer or putting thewringer rolls under tension so that they apply pressure to materialpassing through the said rolls.

Various novel features and advantages of the invention will behereinafter more fully referred to in connection with the accompanyingdescription of the preferred form of the invention,

15 reference being had to the drawings wherein:

Fig; l is a partial sideand longitudinal sectional elevational View of awringer embodying the novel features of the invention;

Fig. 2 is a transverse sectional elevational view 20 on the line 2-2 ofFig. 1; and I i Fig. 3 is a perspective view of a part of the tensionmechanism of the invention.

Referring now to the drawings more in detail the inventionwill be fullydescribed.

25 A wringer head is represented at 2 and an end frame member isrepresented by 4 which may be connected together in any suitable manneras by a longitudinal member 6' to form a wringer frame structure. Alower roll 8 has one end portion 30 of its shaft l0 journalled in abearing l4 and its other end I 2 is operatively connected to a rolldrive shaft I6.

i The head 2'may contain reversing gearing of any well known form fordriving the shaft I5.

35 Abearing i8 of the head is shown in which there are bushings forsupporting the shaft It. The reversing gearing forms no part of thepresent invention and therefore need not be described it beingunderstood that shaft I6 is driven for 40 driving shaft 12.

An upper frame 22 commonly called an operating member carries an upperroll 24 for coacting with the lower roll 8. This roll 24 has the ends ofits shaft journalled in hubs 26 at 45 opposite ends of the operatingmember 22. Rolls 28 are journalled in the ends of the operating member22 which with the hubs 26 releasably lock the operating member toreceivers 30. The receivers 35 one in the head 2 and one in the 50 endframe 4 are similar so that the one associated with the head only needbe described.

As shown in Fig. 2 receiver 39 at its upper end is provided with avertically disposed slot 55 32 leading into recesses 35 having camsurfaces 'ends of the springs.

A lower vertically disposed slot 36 is provided in the receiver which isof a width substantially equal to the diameter of the bearing [8 so thatthe receiver may move up and down. As stated there is a receiverassociated with frame end 4 and formed similarly to that associated withthehead so as to be movable up and down.

A pair of spring members 40 and 42 extend longitudinally of the wringerthe ends of which diverge more or less as shown in Fig. 1. Opposite endsof the upper spring are seated in seats 44 and 46 of the head 2 and endframe 4 respectively. The lower spring member has its ends seated inseats 48 of the receiver 30 as shown clearly in Fig. 2.

A device 50 which may be called an expander is provided. This has anupper plate 52 against which the upper spring 40 abuts and a lower plate54. Transverse spring separating parts 58 between the springs 40 and 42are connected by side plates 58 to the members 52 and 54. An adjustingscrew 60 carrying a manually engageable part 62 is in threadedengagement with the part 54 so that its end may abut the lower spring42.

By moving the screw 60 in and out the central portions of the springsare moved towards one another or are allowed to separate. For instanceas the screw 60 is screwed inwardly the central part of the lower spring42 is brought towards the central part of the upper spring 40 so thatseparators 56 tend to separate the Thecloser the central parts of thesprings the more pressure is exerted on the receivers or the more springresistance is offered to upward movement of the receivers. In thedrawings the receivers are shown in their lowermost position the uppersides of openings 36 of the receivers resting on hubs I 8 and 14 of thehead and frame end. The springs may be tensioned so that the receiversare yieldingly held in this lower position and this may be calledinitial tension. The roll 28 and hub 26 of the operating member 22 areshown in Fig. 2 as they are positioned when the operating member is inits neutral inoperative position with the upper roll 24 resting on thelower roll 8.

In such a position the rolls are not under tension and the upper rollmay be moved upwardly by lifting the operating member. The operatingmember with its roll resting on the lower roll 8 is swingable inopposite directions from a central inoperative position to an operativeposition at either side thereof. 4

When the operating member is moved from its central inoperative positionto an operative position at either side of the inoperative position therolls 28 are caused to roll onto the cam surface-s 34 of the receiversand the said rolls come to rest in the recesses 35, elevating thereceivers slightly against the action of the springs. The springs, rollsand cam surfaces act to releasably lock the operating member in anoperative position with the upper roll on the lower roll.

In this position the receivers may move upwardly againstthe action ofthe spring when material, such as clothes, is passed between the rollsso that the springs apply pressure to the rolls and material passedtherebetween.

From the foregoing it will be observed that the pressure applied to therolls 'maybei'vari'ed by moving the central part of the springs towardsand away from one another. ,The mechanism is simple in form and adaptedtofacilitatesmall variations in pressure within a wideirang'e ofpressures. H What it is de'sir'edto claim and secure by Letters Patentof theiUnited' States is: g

'1. The combination in a wringer of, "a name,

"a roll journalled in th'eframe on a fixed axis, a second removableroll, members slidable'rela'tive to the frame at opposite jends'of saidrolls, means for releasably locking said second roll to said members,abutrnents fat the lower side of the frame at opposite ends thereoL'a'ndupper and lower" springs connected together intermediate their endsextending longitudinally of the frame withthe opposite ends of saidsprings engaging 35 said abutments and said slidable members.

2. The combination in a'wringerof, a frame, a roll journalled in theframe ona fixed axis, a second removable roll, members slidable relativeto the frame at opposite ends of said rolls, means for rel'eas'ablylocking said second'roll to said members, abutments at the. lower sideof the frame at opposite ends thereof, upper and lower springs extendinglongitudinally of the frame having their opposite endsen'gaging theabutments and slidable'members, and adjustable expanding meansintermediate the ends of said springs acting thereon to separatesaidsprings.

3. The combination inja wringer of, a frame, a roll journalled in theframe on a fixed axis, a removable second roll;.members slidablerelative to the frame at opposite ends of said rolls, means toreleasabl'y lock the second roll to said members,

and below said springs acting to press said springs together.

4. The combination in a wringer of, a frame, a roll journalled in theframe on a fixed axis, a second roll journalled in the frame about anaxis movable with respect to said frame, members slidable relative tothe frame at opposite ends of said rolls, abutments at the lower side ofthe frame at opposite ends thereof, upper and lower springs extendinglongitudinally of the frame having their opposite ends engaging theabutments and. slidable members, expanding means intermediate the endsof said springs acting thereon to separate-said springs, includingmembers at the outer sides of said springs intermediate the ends thereofrelatively movable towards and "away fromone'another, and other membersat the sides thereof extending between said springs.

5. 'The combination in a wringer of, a frame, a roll .journalled in theframe on a fixed axis, a second roll journalled in the frame about anaxis movable with respect to said. frame, members slidable relative tothe frame at opposite ends of said rolls, abutments at the lower side ofthe frame at opposite ends thereof, separate upper and lower springsextending longitudinally of said frame, the ends of the upperspringengaging said abutments and the ends of the lowerspring engaging saidslidable members, a member intermediate the ends of said springs havingapart extending across the outer .side of the: upper spring and parts atthe sides thereof extending springsholding the intermediate portions-ofsaid springs in 'fixed spaced relationand transverse members extendingbetween said springs .at opiposite sides of isaidintermediate portionsof the springs tending to wedgethem apart so that the ends: of saidsprings diverge.

'7. Tension mechanism for the rolls of a wringer comprising. upper andlower relatively flat-springs having end portions adapted to engagethe-rela- 'ti'vely movable frame and roll parts o f-a wringer,

and means for urging adjacent endsofthe said springs apart including, amember having -a part extending across the outerside of onespringintermediate its ends, a partadjustable in said member abuttingthe outer sideof the other spring, and

portions associated withsaid member extending between said springs atthe sides ofsa-id parts. J L. BERKJNS.

